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LM25575MH
+NomenclatureIC REG BUCK ADJ 1.5A 16HTSSOP
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FabricantTexas Instruments
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Pièce fabricant #LM25575MH
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Package HTSSOP-16
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En stock2081
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Spécifications
| Attribut | Valeur |
| Package / Case | Bulk,Tube |
| Series | SIMPLE SWITCHER® |
| Part Status | Not For New Designs |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 6V |
| Voltage - Input (Max) | 42V |
| Voltage - Output (Min/Fixed) | 1.225V |
| Voltage - Output (Max) | 40V |
| Current - Output | 1.5A |
| Frequency - Switching | 50kHz ~ 1MHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
Présentation
Description
Key features include a wide input voltage range, high efficiency, and an integrated N-channel MOSFET. It also offers adjustable output voltage, soft-start capability, and thermal shutdown protection to enhance reliability and performance. The LM25575MH is commonly used in distributed power systems, automotive applications, and industrial equipment where efficient power conversion is essential.
It comes in a thermally enhanced TO-PMOD-8 package, which aids in heat dissipation, ensuring stable operation even in demanding environments. The device's ease of use and flexibility make it an attractive choice for engineers looking for a dependable step-down voltage regulator.
Equivalent
Features
Additional features include a high switching frequency of up to 1 MHz for smaller external components, an enable pin for low-power shutdown, and a programmable soft-start function to limit inrush currents during start-up. The LM25575MH also offers robust protection features, such as cycle-by-cycle current limiting, thermal shutdown, and under-voltage lockout.
The device is housed in a thermally-enhanced, 20-pin HTSSOP package, allowing for efficient heat dissipation. Its design and feature set make it a reliable choice for industrial, automotive, and general-purpose power supply applications.
Pinout
Here are the main functions of its pins:
1. VIN (Pin 1): Supply voltage input.
2. UVLO (Pin 2): Undervoltage lockout; sets input voltage level for operation.
3. RT (Pin 3): Frequency setting resistor.
4. SYNC (Pin 4): Used for synchronization to an external clock.
5. RAMP (Pin 5): Slope compensation ramp.
6. COMP (Pin 6): Compensation pin for control loop stability.
7. FB (Pin 7): Feedback voltage for regulation.
8. SS (Pin 8): Soft-start control.
9. PG (Pin 9): Power good indicator.
10. VCC (Pin 10): Internal voltage regulator output.
11. BOOT (Pin 11): Bootstrap capacitor connection.
12. SW (Pin 12): Switch node.
13. GND (Pins 13-15): Ground connection.
14. BP (Pin 16): Bypass capacitor for VCC.
15. N/C (Pins 17-20): No connection.
This configuration allows the LM25575MH to effectively regulate output voltage for a wide range of applications.